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Early signs of engine overheat

Early signs of engine overheat

When internal combustion engines work, they generate a lot of heat. This heat is removed by the coolant through the radiator. Also the engine oil helps to circulate and thereby indirectly remove the heat. 
When there is a problem with the cooling system, the result is most likely an overheating engine.
Engine overheat if not caught early can result to catastrophic engine failure. 
The ability to quickly sense that the engine is overheating or is about to overheat can potentially save the car owner spending on engine repairs or replacement.
Below are common causes of Overheating:
° Faulty radiator° Faulty water pump° Bad drive belt for water pump° Blocked exhaust° Excessively running lean° Bad thermostat&de..

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Causes of overheating when car is idling or at a stop

Causes of overheating when car is idling or at a stop

We have fixed a number of faults where the car runs fine at normal or high speeds but as soon as the car comes to a stop, it begins to overheat. At times, the cause of this condition is not very obvious and can be difficult to trace.
Things that can cause  a car to overheat when idling are as follows:
Fan speed - It is possible for this to happen because cooling system fans are designed to run at variable speeds. The implementation varies in different cars. Some cars use 2-speed fans operation, some use 3-speed fan operation, some use pulse width modulation technique for varying fan speed. Let's take the 3-speed fan as an example. If a relay, fuse or wire that controls the low speed operation is faulty, fan will work well when there is more cooling demand but will not work ..

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Dangers of overused engine air filter that has become flaky

Dangers of overused engine air filter that has become flaky

I have seen cars with very old and overused air filters. These air filters are so bad that they are not only blocked but have become flaky. The air filter begins to disintegrate on its own and the particles find their way into the combustion chamber.
The photo that is attached is a photo of an engine air filter that has been left unchanged, blocked, has become flaky and has started disintegrating.
Apart from parts of the air filter posing a risk to the engine, it can also allow other foreign materials to gain access to the engine.
A good preventive maintenance practice is to change the engine's air filter regularly.
Other benefits of changing the engine's are filter periodically are;

Reduced contamination of the engine oil as less dust particles will find their way into ..

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Effects of cooling system thermostat removal in hot climate

Effects of cooling system thermostat removal in hot climate

There is a myth that is quite popular in some countries with hot climate, even among mechanics; "cooling system's thermostat is not needed in the car".
This believe is not necessarily true even though the importance of the thermostat is not as much as it is in a car in a cold climate.
Some of the effects of thermostat delete;
The engine does not warm up on time. One function of the thermostat is preventing the coolant from circulation until the engine has attained a particular temperature. When the thermostat is not in place, the coolant begins to circulate right from the moment the engine is started. This extends the time the engine takes to attain operating temperature. The cooler the ambient temperature, the more time it will take to attain operating temperature.
T..

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